A copper refiner produces a copper ingot weighing 3.33 kg?

Question

If the copper is drawn into wire whose diameter is 8.64 mm., how many ft. of copper can be obtained from the ingot?

The density of copper is 8.94 g/cm3

Answer example is 48.7 or 2.32e4

Answer 1

3,330 grams @ 8.94 grams /cm3 = 372.48 cm3 volume

372.48 cm3  = 372480 cu mm

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a diameter of 8.64, gives a cross section surfacew area of 117.26 mm2

372480 cu mm / 117.26 mm2 = 3176.56 mm

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3176.56 mm @ 0.003 281 foot / 1 mm =  10.42 feet  

your answer is 10.4 feet